With the Great Firewall of China, the country has a tight grip on its communication infrastructure, especially on the IP and TCP layer, however there are still some options left. It all depends on the volume or reliability though.
Be careful! By using VPN or TOR you will become subject of investigation, especially if you are building connections to the USA
VPN:
China Unicom, one of the biggest telecoms providers in the country, is now blocking connections where a VPN is detected, according to one company with a number of users in China.
In early 2015, China cracked down on VPNs, software that allows internet users to access Twitter, Facebook, Gmail and others websites blocked in the country, according to state media and service providers. Many users reported VPN service disruptions. However, some VPN providers still work in China.
TOR:
Tor is most of the country, however that many IP addresses inside the China Education and Research Network (CERNET) are able to connect to at least to the Tor relay. Apart from the CERNET netblock, the filtering seems to be quite effective despite occasional country-wide downtimes.
SSH tunneling
By establishing an SSH tunnel, a user can forward all their traffic over an encrypted channel, so both outgoing requests for blocked sites and the response from those sites are hidden from the censors, for whom it appears as unreadable SSH traffic.
